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http://dx.doi.org/10.7842/kigas.2014.18.4.21

Explosion Hazards of Aluminum Powders with the Variation of Mean Diameter  

Han, Ou-Sup (Occupational Safety & Health Research Institute, KOSHA)
Han, In-Soo (Occupational Safety & Health Research Institute, KOSHA)
Publication Information
Journal of the Korean Institute of Gas / v.18, no.4, 2014 , pp. 21-26 More about this Journal
Abstract
In this study, the explosion characteristic of aluminium powders have been investigated as a function of particle size using by a 20 L dust explosion apparatus (K$\ddot{u}$hner). The tested aluminium particle sizes were the volume mean diameter of 16, 33 and $88{\mu}m$. The lower explosion limit increases gradually with the increasing of dust particle diameter, respectively 40, 60, $125g/m^3$ in mean diameter of 16, 33 and $88{\mu}m$. Also the increase in particle size for each aluminum dusts was found to cause an decrease in explosion pressure and Kst of dust explosion index, and a increase in the lower explosion concentration. Research results may have important implications for aluminum powders utilization and safety operation.
Keywords
aluminium powder; dust explosion; explosion pressure; lower explosion limit;
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